Alloy Steel Orifice Flanges Manufacturers in India
PED Approved Alloy Steel Orifice Flanges Manufacturer & Suppliers
PED Certified Alloy Steel Orifice Flanges Manufacturer & Suppliers
Fitwel Industries LLP is a Dominant and Expert manufactuer, suppliers & exporter of Alloy Steel Orifice Flange manufacturer in India. An ASME B16.47 orifice plate Flanges is used with orifice meters, which in turn are designed with the purpose of measuring the flow rate of media i.e. which could either be fluids or it could be gases in the respective pipeline. There are pairs of pressure Tappings, that are directly placed and machined opposite each other, on to the Slip on orifice flange. These tappings are mostly on 2 sides of the flanges. The Alloy Steel 48.NB ASTM A182 F91 orifice flanges in the orifice plate weld neck flange contains a small hole. Two pressure tap holes are generally drilled in each flange which helps the worker minding the piping system to measure the pressure built inside the pipe. A jackscrew fitted between the two api 6a orifice flange. Compare our price for Alloy Steel ANSI b16.5 class 150 orifice plate flange manufacturers & suppliers in India you will find the best Price from our US.
Call@-022-23829256. We are leading ISO certified manufacturers, exporter & suppliers of Alloy Steel Orifice flanges, SA ANSI b16.5 class 150 Orifice Flange, Alloy Steel ANSI b16.5 class 150 Orifice flanges in Mumbai, Pune, Chennai, Ahmedabad, Faridabad, Delhi, Bangalore, India.
ASME B16.5 Orifice Flanges Specification :
Standard : ANSI B16.5, ANSI B16.47 Series A & B, MSS SP44, ASA, API-605, AWWA, Custom Drawings
Size : 1/2" (15 NB) to 48" (1200NB)
Class : 150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS, DIN Standard ND-6,10, 16, 25, 40 Etc.
Flange Face Type : Flate Face (FF), Raised Face (RF), Ring Type Joint (RTJ)
BS : BS4504 , BS4504, BS1560, BS10
DIN : DIN2527, DIN2566, DIN2573, DIN2576, DIN2641, DIN2642, DIN2655, DIN2656, DIN2627, DIN2628, DIN2629, DIN 2631, DIN2632, DIN2633, DIN2634, DIN2635, DIN2636, DIN2637, DIN2638, DIN2673
ANSI B16.47 Orifice Flanges Material & Grades:
Alloy Steel Orifice Flanges : ASTM / ASME A/SA 182 & A 387 F1, F5, F9, F11, F12, F22, F91
All Classes Dimensions of Orifice Plate Flanges
NPS |
DIA
D3 |
L |
N |
P |
T |
1/2 |
13 |
0.24 |
1.5 |
30 |
1.5 |
3/4 |
19 |
0.34 |
1.5 |
30 |
1.5 |
1 |
25 |
0.42 |
2 |
30 |
2 |
1½ |
40 |
0.64 |
3 |
30 |
3 |
2 |
51 |
1 |
6 |
30 |
3 |
3 |
76 |
1.5 |
8 |
40 |
3 |
4 |
102 |
1.5 |
10 |
40 |
5 |
6 |
152 |
1.5 |
15 |
40 |
5 |
8 |
202 |
3.5 |
15 |
40 |
7 |
10 |
253 |
3.5 |
19 |
45 |
7 |
12 |
302 |
3.5 |
20 |
45 |
10 |
14 |
341 |
6 |
20 |
45 |
10 |
16 |
392 |
6 |
21 |
50 |
11 |
18 |
443 |
8 |
23 |
50 |
13 |
20 |
494 |
8 |
25 |
50 |
16 |
24 |
595 |
10 |
29 |
60 |
18 |
|
NPS |
ASME B16.5 Flange Class |
150 |
300 |
600 |
900 |
1500 |
2500 |
S |
1/2 |
110 |
110 |
110 |
115 |
115 |
120 |
3/4 |
110 |
110 |
110 |
115 |
115 |
120 |
1 |
110 |
115 |
115 |
120 |
120 |
125 |
1½ |
110 |
120 |
120 |
125 |
125 |
130 |
2 |
110 |
115 |
115 |
125 |
125 |
130 |
3 |
115 |
120 |
120 |
125 |
135 |
140 |
4 |
115 |
125 |
125 |
130 |
140 |
150 |
6 |
115 |
120 |
130 |
135 |
145 |
170 |
8 |
120 |
125 |
135 |
145 |
155 |
170 |
10 |
120 |
130 |
145 |
145 |
165 |
190 |
12 |
125 |
135 |
140 |
145 |
165 |
195 |
14 |
130 |
140 |
145 |
150 |
175 |
|
16 |
130 |
145 |
150 |
155 |
180 |
|
18 |
130 |
145 |
155 |
160 |
195 |
|
20 |
135 |
150 |
155 |
165 |
205 |
|
24 |
135 |
160 |
165 |
190 |
2205 |
|
|
NPS |
ASME B16.5 Flange Class |
150 |
300 |
600 |
900 |
1500 |
2500 |
DIA
D4 |
1/2 |
48 |
54 |
54 |
64 |
64 |
70 |
3/4 |
57 |
67 |
67 |
70 |
70 |
77 |
1 |
67 |
73 |
73 |
80 |
80 |
86 |
1½ |
86 |
96 |
96 |
99 |
99 |
118 |
2 |
105 |
111 |
111 |
143 |
143 |
146 |
3 |
137 |
149 |
149 |
168 |
175 |
197 |
4 |
175 |
181 |
194 |
206 |
209 |
235 |
6 |
222 |
250 |
266 |
289 |
282 |
317 |
8 |
279 |
307 |
320 |
358 |
352 |
387 |
10 |
339 |
361 |
399 |
434 |
434 |
475 |
12 |
409 |
422 |
456 |
497 |
520 |
549 |
14 |
450 |
485 |
491 |
519 |
577 |
|
16 |
513 |
539 |
564 |
573 |
640 |
|
18 |
548 |
596 |
611 |
637 |
703 |
|
20 |
605 |
653 |
681 |
697 |
754 |
|
24 |
716 |
773 |
789 |
836 |
899 |
|
Tolerances
D1 & D2 = ± 1%
D3 = ± 1 mm
D4 = 0/-0.4 mm
L = ± 0.1 mm
N = see note 6
P = ± 0.1 mm
S = ± 0.1 mm
T = see note 2
Notes:
- Marking
The Upstream side of the orifice tab shall be stamped at the indicated locations with:
- the word UPSTREAM
- the Tag Number
- the ASME flange class, followed by RF
- the nominal pipe size (NPS)
- the measured orifice D1 (in mm)
- the material of the orifice plate
- the type of orifice plate (Square, Restriction etc.)
Letter height approx. 4 mm
- Welding of tab
Tab may be integral with orifice plate up to and including 7 mm plate thickness.
In other cases full penetration joint to be applied.
- Finish of plate
The upstream and downstream faces of the orifice plate to a diameter equal to D3 shall have a surface roughness Ra ≤ 0.8 µm ASME B46.1.
The remaining annular part (between D4 & D3) of upstream and downstream faces shall have a surface roughness Ra between 3.2 and 3.6 µm ASME B46.1. This finish shall be obtained by machining with a round nosed cutting tool having a 0.8 mm radius at a feed rate between 0.35 and 0.45 mm per revolution.
- Concentricity
The centre of the orifice shall not differ from the centre of the plate by more than 0.1 mm for ≤ NPS 8 and 0.2 mm for > NPS 8.
- Finish of throat
The throat and outlet cone shall have a surface roughness Ra ≤ 0.4 µm ASME B46.1.
All edges shall be sharp and free from burrs, so that when viewed with the naked eye no light is reflected by the corners.
- Plate thickness
The difference between any two measurements of plate thickness, for annular part D1-D3, shall not differ by more than 0.001 DN in mm.
The plate shall not depart from flatness along any diameter by more than 0.01 D3.
Tolerance for N shall be:
N ≤ 6 mm +0.1/-0.25 mm
N > 6 mm +0/-1.5 mm
Thickness for annular part D3-D4, may be slightly less, max 0.05 mm, due to surface finishing difference between D1-D3 & D3-D4. (see note 3)
General notes:
Dimensions are in millimeters unless otherwise indicated.
Allowable pressure difference 20 bar for temperatures up to 400 °C and D1/D3 ≥ 0.1. The thickness of the plate needs to be verified for strength in case the pressure difference is higher than 20 bar and/or the temperature is beyond 400 °C. Based on the outcome of the calculation the thickness of the plate needs to be adjusted.
DIA D1 & DIA D2 - to be specified by purchaser.
Material to be specified by purchaser.
Other Related Products:
We Supply Orifice Flanges For Various Application Industry Like :

Oil & Gas Industries

Petrochemical Industries

Engineering Industries

Chemical Industries

Sugar Industries

Power Generation Industries

Fertilizers Industries

Food Processing Industries
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